VERIFIED · SR-PICK-V1 · SATURDAY RACING · VERIFIED · SR-PICK-V1 ·
SR
AUTHENTICATED
Verifying in your browser…
Hashing the pick's canonical bytes with your device's SHA-256.
This is to certify that the pick recorded below was
cryptographically committed to Saturday Racing's transparency
ledger before the race ran . The commitment is a SHA-256
leaf hash of the canonical bytes; any subsequent tampering
breaks the hash and this certificate turns red. The check
runs on the reader's own device — no trust required from us.
The Pick
Horse Greek Symphony
Race Lingfield (AW) · 13 July 2026 · 17:10
Product Pick Winner (Mr Fox)
Advised odds 4/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-13T09:34:10.885684+01:00
Cryptographic Seal
Leaf hash
7ad80c92e48c0e27737f6cc46c8820e422c43bdb4a7f7821ffc2c25b0cb5cf94
Your browser
…
Batch
13 July 2026 · 709 leafleaves
· inspect batch →
Merkle root
eba1d4cb07b18df5f26ea6211dae664c2a8d9ce7bdcd95a3a7d9da03ed6cf62b
Your browser walk
…
On-chain
Off-chain verified. Anchoring on-chain is a separate, gas-gated step.
Technical appendix — canonical bytes & Merkle proof
The canonical bytes
This is the exact JSON that was hashed. Copy it, run sha256sum on it yourself, and you should get the leaf hash above.
{"attribution":{"pick_source":"llm","prompt_version":"v3_b557cbd4"},"committed_at":"2026-07-13T21:10:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-13T08:34:10Z","product":"pick_winner","product_lane":"","race":{"course":"Lingfield (AW)","external_id":"rac_12003914","internal_id":2792,"race_date":"2026-07-13","race_time":"17:10"},"schema":"sr-pick-v1","selection":{"advised_odds":"4/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Greek Symphony","position_claim":"win"}}
Copy JSON
The Merkle proof
Each hop is a sibling hash. Your browser walks these from the leaf up to the root, hashing pairs at each step.
# Position Sibling hash
1
left
7a89b0d93be0a8a2590ef2c5b07de413a165a13db79ed0b69ec3db0877963620
2
left
8a7667467eeee04f8f6b1667f05092f871d94518e1088462be5cc0303bb9bd5f
3
left
12b6887b53823de16f0e2014b5148cfb67d28ee08c45f91df99d9ac1f1d78873
4
right
6982391c6ea8a7080bf40deb9d4540e60c28a5ca585e70a2936741ed443c778a
5
right
73f197e6afca84fa5558bab48b9319649e68f2939fd6a9c1d3a3cddb7fe8e39b
6
left
55948f4e8e29440793f46045b1f25282558c5bbca3cffc7780c2a3c54ca6d6ec
7
left
b20426c9805bd5f17d7d0c3747a91f6539d868cc80d6de1f3197b66c180d007b
8
right
f1c99ba68a2d45d1bb79f40edc8b534afd41f7a23fe00327643be3c20b514374
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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